Batch removal of chromium(VI) from aqueous solution by Turkish brown coals

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dc.contributor.authorArslan, Gulsin
dc.contributor.authorPehlivan, Erol
dc.date.accessioned2020-03-26T17:17:03Z
dc.date.available2020-03-26T17:17:03Z
dc.date.issued2007
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe ability of using low-rank Turkish brown coals (Ilgin: BC1, Bey ehir: BC2, and Ermenek: BC3) to remove Cr(VI) from aqueous solutions was studied as a function of contact time, solution pH, temperature, concentration of metal solutions and amount of adsorbent. Their sorption properties were compared with the activated carbon from Chemviron (AQ-30). Adsorption of Cr(VI) uptake is in all cases pH-dependent showing a maximum at equilibrium pH values between 2.0 and 3.2, depending on the biomaterial, that correspond to initial pH values of 2.3 units for BC1, 3.0 units for BC2 and 3.2 units for BC3 and AQ-30. Batch equilibrium tests showed that the Cr(VI) removal was fitted with Freundlich isotherm and the adsorption reached equilibrium in 80 min. It was proceeding effectively into a short acid pH interval (2.0-3.2) where processes of Cr(VI) sorption are maximized. It was observed that the maximum adsorption capacity of 11.2 mM of Cr(VI)/g for Ilgin (BC1), 12.4 mM of Cr(VI)/g for Beysehir (BC2), 7.4 mM of Cr(VI)/g for Ermenek (BC3) and 6.8 mM of Cr(VI)/g for activated carbon (AQ-30) was achieved at pH of 3.0. The rise in temperature caused a slight decrease in the value of the equilibrium constant (K-c) for the sorption of Cr(VI) ion. The Cr(VI) sorption capacities of Bey ehir and Ilgin brown coals were the same. Ermenek brown coals and activated carbon (AQ-30) showed a similar sorption capacity. (C) 2006 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.biortech.2006.09.041en_US
dc.identifier.endpage2845en_US
dc.identifier.issn0960-8524en_US
dc.identifier.issue15en_US
dc.identifier.pmid17113283en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage2836en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.biortech.2006.09.041
dc.identifier.urihttps://hdl.handle.net/20.500.12395/21237
dc.identifier.volume98en_US
dc.identifier.wosWOS:000247759100009en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherELSEVIER SCI LTDen_US
dc.relation.ispartofBIORESOURCE TECHNOLOGYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectbiosorbenten_US
dc.subjectbrown coalsen_US
dc.subjecthexavalent chromiumen_US
dc.subjectremovalen_US
dc.titleBatch removal of chromium(VI) from aqueous solution by Turkish brown coalsen_US
dc.typeArticleen_US

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